Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '81bde6ea2bc3b87d034c381564c0f616070a34913386d2e47b97aa26451797a6' 
  AND token = 'rf2woNy+rQYvWgXn98pGFsyz0kFz4p3+d8d4TMz7e7Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}